Concrete pumping movable arm and concrete spreader comprising same

Abstract

The invention provides a concrete pumping movable arm. The concrete pumping movable arm comprises a movable arm, a telescopic control part which drives the movable arm to perform telescopic movement and a rotary control part which drives the movable arm to rotate. The concrete pumping movable arm is applied, the concrete pumping movable arm has the effects that the whole structure is tidy, the combined design of the telescopic control part, a rotary control part and the movable arm is adopted to realize the concrete pumping output at different positions in the plane through the rotary swing and telescopic of the movable arm, and the practicability is high. The invention further provides a concrete spreader. The concrete spreader comprises a vehicle body, a travelling mechanism, a locking mechanism, the concrete pumping movable arm and a pipeline. The travelling mechanism is matched with a travelling track arranged on the lining trolley and arranged on the lower surface of the vehicle body. The locking mechanism is movably arranged on the vehicle body. The concrete spreader is applied, the concrete pumping output at different positions in the plane can be realized through the rotaryswing and telescopic of the movable arm, and the construction efficiency is high.

Description

technical field [0001] The invention relates to the technical field of lining, in particular to a concrete pumping movable arm and a concrete distributing machine including the movable arm. Background technique [0002] During the concrete construction of the second lining of the tunnel, it is necessary to pump the concrete into the cavity between the formwork and the excavation surface through different positions on the formwork to complete the pouring. At present, when it is necessary to replace the concrete pumping interface, it is necessary to manually remove the clamp and the pumping tube on the pumping tube, replace the pumping tube with a suitable length and adjust the position of the pipeline outlet, and then reconnect with the next pumping interface before installing. [0003] This method has the following defects: (1) the pumping interface needs to be frequently replaced during construction, and the pipe needs to be dismantled, replaced, cleaned, connected, and fix...

AI Technical Summary

Problems solved by technology

[0003] This method has the following defects: (1) the pumping interface needs to be frequently replaced during construction, and the pipe needs to be dismantled, replaced, cleaned, connected, and fixed each time the interface is replaced. The workload and labor intensity are large and time-consuming; ( 2) The pumping of concrete needs to be stopped during the dismantling of the pipe, because the slump loss of the concrete remaining in the pump pipe due to the long pause time can easily cause the pipe to be blocked; The concrete is easy to form cold joints, which affects the quality of pouring; (4) Frequent replacement of the pumping interface will leave and overflow some concrete in the pipe, resulting in waste and on-site pollution; Operation, higher position may cause safety accidents

Images